Yes, you are correct. If you have already e-filed or mailed the return and the IRS has
accepted your return you need to wait until you have received your refund
to file an amendment and add additional information. You will need to send in
any forms that caused the need for an amendment (Original 1040 Form, new 1040X
Form and 1098-T). Print, sign and mail your forms to the IRS.
Click here for instructions for amending a return.
